Nonlinear Analysis of Torsion in Reinforced Concrete Members after Developing Initial Crack

Experimental and finite element analysis of reinforced concrete multi-cell box girders retrofitted with carbon fiber reinforced polymer strips under torsion

“…In this procedure, an efficient algorithm was developed using MATLAB to accomplish the analysis, solve the appropriate equations, and calculate the torsional moment and angle of twist. Computer modeling showed that the torsional stiffness of the girders could be reduced to approximately one-tenth of its initial value when cracking occurs (Hosseini et al, 2016). In another study, a 20-node hexahedral isoperimetric brick element was implemented to simulate concrete (Majeed et al, 2017), and the steel reinforcing bars were assumed to transmit axial forces only.…”

Behavior of Steel Fiber Self-Compacting Concrete Hollow Deep Beams Under Torque

“…There are two key explanations for this trend, initially the approach of design methods was based on more realistic ideas of loads and structure behavior compared to older approaches, and secondly the number and variety of structures where the torsion is the axis of structure behavior and not the secondary effect. [1] Before cracking Concrete acts as a flexible material and the reinforcement can be ignored [2]. In hopes of preventing torsional failure, many techniques may be used, such as the appropriate design for transverse and longitudinal reinforcements, the use of appropriate mixtures to improve response, and concrete structural components may be strengthened to withstand torsional stress by adding transverse reinforcement, increasing the cross-section of structural elements and applying axial load through the use of pre-stress technique.…”

“…Steel Fiber Reinforced Concrete (SFRC) is a composite material incorporating steel fibers or Saad K. Mohaisen 1 * Muhanad S. Mahdi 1 1) Civil Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq.…”

As Notas Textuais No Manual Didático Arithmetica Elementar Illustrada: O Estudo De Grandezas E Unidades De Medida (1870 – 1940)

“…No vigente trabalho aborda-se o problema de torção, devido possibilitar uma discussão tanto no campo de ensino como no técnico. Este problema físico possui aplicações sofisticas como em Teimoori et al (2016), Ecsedi e Baksa (2010), Strek et al (2016 e Hosseini et al (2016). Assim, os discentes devem ter um entendimento físico-matemático preliminar de um modelo com caráter simplista, que fornece a base necessária para tal poder realizar a extrapolação dos conceitos em um problema de escala maior.…”